A graduate teaching assistant (Euijung Ryu) for Introduction to Statistics (STA 2023) at the University of Florida collected data from one of her classes in spring 2007 to investigate the relationship between using the explanatory variable x = study time per week (average number of hours) to predict the response variable y = college GPA. For the 21 females in her class, the correlation was 0.42. For the eight males in her class, the data were as shown in the table.
a. Create a data file and use it to construct a scatterplot. Interpret.
b. Find and interpret the correlation.
c. Find and interpret the prediction equation by reporting the predicted GPA for a student who studies (i) 5 hours per week, (ii) 25 hours per week.

23333323 14 25 5 5 0 2 5 21 d|1 2 3 4 5 6 7 8